com.healthmarketscience.jackcess.impl.office
Class ECMAStandardEncryptionProvider

java.lang.Object
  com.healthmarketscience.jackcess.impl.BaseCryptCodecHandler
      com.healthmarketscience.jackcess.impl.OfficeCryptCodecHandler
          com.healthmarketscience.jackcess.impl.office.BlockCipherProvider
              com.healthmarketscience.jackcess.impl.office.ECMAStandardEncryptionProvider

All Implemented Interfaces:

com.healthmarketscience.jackcess.impl.CodecHandler

Direct Known Subclasses:

NonStandardEncryptionProvider

public class ECMAStandardEncryptionProvider
extends BlockCipherProvider

Author:

James Ahlborn

Nested Class Summary

Nested classes/interfaces inherited from class com.healthmarketscience.jackcess.impl.OfficeCryptCodecHandler

OfficeCryptCodecHandler.Phase

Field Summary

Fields inherited from class com.healthmarketscience.jackcess.impl.BaseCryptCodecHandler

CIPHER_DECRYPT_MODE, CIPHER_ENCRYPT_MODE

Constructor Summary

	ECMAStandardEncryptionProvider(com.healthmarketscience.jackcess.impl.PageChannel channel, byte[] encodingKey, ByteBuffer encProvBuf, byte[] pwdBytes)
protected	ECMAStandardEncryptionProvider(com.healthmarketscience.jackcess.impl.PageChannel channel, byte[] encodingKey, ByteBuffer encProvBuf, byte[] pwdBytes, int hashIterations)

Method Summary

protected org.bouncycastle.crypto.params.KeyParameter	computeCipherParams(int pageNumber) Generates the cipher parameters for the given page number.
protected org.bouncycastle.crypto.BlockCipher	initCipher()
protected org.bouncycastle.crypto.Digest	initDigest()
protected boolean	verifyPassword(byte[] pwdBytes)

Methods inherited from class com.healthmarketscience.jackcess.impl.office.BlockCipherProvider

canDecodeInline, canEncodePartialPage, decodePageImpl, encodePageImpl, getBlockCipher, initCryptCipher, initPwdCipher, reset

Methods inherited from class com.healthmarketscience.jackcess.impl.OfficeCryptCodecHandler

bits2bytes, create, decodePage, encodePage, getDigest, getPhase, initCryptDigest, initPwdDigest, int2bytes, iterateHash

Methods inherited from class com.healthmarketscience.jackcess.impl.BaseCryptCodecHandler

applyPageNumber, blockDecrypt, blockDecryptBytes, blockEncrypt, decryptBytes, decryptBytes, decryptInit, decryptInit, encryptInit, encryptInit, fill, fixToLength, fixToLength, getCipherParams, getEncodingKey, getEncodingKey, getStreamCipher, getTempBuffer, hash, hash, hash, hash, isBlankKey, processBytesFully, readHeaderPage, streamDecrypt, streamEncrypt, toString, wrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ECMAStandardEncryptionProvider

public ECMAStandardEncryptionProvider(com.healthmarketscience.jackcess.impl.PageChannel channel,
                                      byte[] encodingKey,
                                      ByteBuffer encProvBuf,
                                      byte[] pwdBytes)
                               throws IOException

Throws:

IOException

ECMAStandardEncryptionProvider

protected ECMAStandardEncryptionProvider(com.healthmarketscience.jackcess.impl.PageChannel channel,
                                         byte[] encodingKey,
                                         ByteBuffer encProvBuf,
                                         byte[] pwdBytes,
                                         int hashIterations)
                                  throws IOException

Throws:

IOException

Method Detail

initDigest

protected org.bouncycastle.crypto.Digest initDigest()

Overrides:

initDigest in class OfficeCryptCodecHandler

initCipher

protected org.bouncycastle.crypto.BlockCipher initCipher()

Overrides:

initCipher in class BlockCipherProvider

computeCipherParams

protected org.bouncycastle.crypto.params.KeyParameter computeCipherParams(int pageNumber)

Description copied from class: BaseCryptCodecHandler

Generates the cipher parameters for the given page number.

Specified by:

computeCipherParams in class BaseCryptCodecHandler

verifyPassword

protected boolean verifyPassword(byte[] pwdBytes)

Specified by:

verifyPassword in class OfficeCryptCodecHandler